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Topic: Geometry Problem
Replies: 17   Last Post: Feb 20, 2008 10:04 AM

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rb

Posts: 5
Registered: 2/19/08
Re: Geometry Problem
Posted: Feb 19, 2008 12:09 PM
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I.M. Soloveichik wrote:
> There is not enough information

How do you prove it? ;)

> unless that angle at D which looks like it is
> 90 is supposed to be 90--in that case the angle x is 40 degrees.


You shouldn't see what "looks like" if you cant say it for sure.
The picture is only indicative. Drawing it with the right angles could
be an help but it's a non-necessary condition to solve a problem.





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